Mechanical dish-washer.



yUTE STAS ATEN FFlE,

WILLARD R. WALKER, OF SYRACUSE, NEW YORK, ASSIGNOR -TO WALKER BROTHERS COMPANY, 0F SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

MECHANICAL DISH-WASHER.

Specitatiou of Letters Patent.

Patented May la, 31918.

Application filed July 28, 1916. Serial No. 111,929.

To aZZ whom t man concern.'

Be it known that l, VVILLARD R. WALKER, a citizen of the United States of America, and resident of Syracuse, in 'the county of Onondaga, in the State of New York, have invented new and useful Improvements in Mechanical Dish-Washers, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to certain improvements in mechanical dish-washers of the classv set forth in my pending applications, Serial Nos. 776,678, filed June 30, 1913, 811,720, filed January 12, 1914, 847 ,965, tiled June 29, 1914, and 5,492, filed February 1,'

1915, in so far as it is directed broadly to the use of an agitator or dashe'r or impeller movable centrally in the conical bottom of a vat containing the washing fluid, in combination with an openwork supporting tray for the dishes supported within the vat above the agitator, the present device being distinguished from those shown in applicants pending applications by the use of a proximity to the upper surface of the 1nclined bottom -2-, but is somewhat shorter liquid-deflecting grid between the agitator and dish-supporting tray.

The object is to produce a more effective and` systematic breaking up of the volume of liquid as it is impelled centrifugally and upwardly by the agitator through the dish-supporting tray.

1n other words, l1 have sought to produce a more uniform distribution of the upwardly projected liquid throughout the area of the vat and dish-supporting tray by interposing between the agitator and said tray, ar series of batlie plates or arms arranged in uniformly spaced relation circumferentially around the produced axis of the impeller and tan ential to concentric circles of different diameters so as to counteract in a measure the centrifugal whirl of the liquid and cause it to be deflected upwardly by said baffle plates or arms through the dish-supporting tray.

Other objects and uses relating to specific parts of the device will be brought out in the following description.

ln the drawings- Figure 1 is a vertical sectional view of the upper portion of a dish-washing machine embodying the features of my invention,

Fig 2 is a top plan of the detached bafiie grl Fig. 3 is an enlarged detail sectional view ofta portion of a grid showing the manner of securing the tangential arms to the outer ring.

In order that my invention may be clearly understood, I have shown a circular vat -1- as provided with a conical bottom Q- having an annular channel -3- in the apex thereof communicating with a discharge valve, not shown, but whereby the water may be drawn off the vat at any time.

The central portion or apex of the bottom -2- within the annular channel -3- is extended upwardly, and `is preferably conical, and is provided with a gland -4- for receiving a rotary driving shaft -5- carrying at its upper end a revoluble impeller blade -6-, the latter being held in place upon the shaft by a winged nut --7-.

This blade travels around and in close than the radial width of said bottom to permit the use of a series of, in this instance three, fixed baiiie plates or deectors -8-v which are secured to the bottom and sides of the vat, and together' with the mpeller 6* are similar to those shown in my pending application, Serial No. 811,720, and need not be further described herein for the 'reason that they are specifically claimed in the application referred to.

The upper end of the vat is enlarged to form a laterally projecting ledge or flange -9 for receiving and supporting an openwork dish-supporting tray -10-.

f This tray comprises an upper main supp porting ring -11- resting upon the flange The bottom 14tof the dish-supporting ske? irl-Suppen f1 spolas m spaced wing' ongtucmly @named VDI spaced unmm dithe center, said arms having longitudinally concaved faces facing in a direction opposite that of the rotation of the impeller.

5. ln a mechanical dishwasher, the coinbination of a. vat containing a Washing fluid, movable means Within the Vat foi' forcing the iluid upwardly, a dish-snpportin@ tray Within the vat sonie distance above sai movable means, and a baa grid Within the Vat between the movable means and 'tray and compiising inner and outer lings lspaced seine distance apart, and spokes connecting said rings and spaced uniform distances apart ciicinnferentially, said spokes being concaYo-convex longitudinally and arianged with their concave sides facing in a direction opposite that of the movement of the movable means.

In Witness whereof l have hereunto set my hand this 18th day i-July, 1916.

7WILILBD R. VALKER. lVitnesses:

E. CHASE, ALICE M. CANNON. 

